Clutch-operating mechanism.



M. H. FLYNN. CLUTCH OPERATING MECHANISM.

APPLICATION FILED JAN l5, I914- I 1,180,709. Patented Apr. 25, 1916.

f 4 SHEETS-SHET 2- 1 ..9. F J f 9 k2 \J- lNVE/VTOH Mm HLFL VM A TTOR/VEY M. H. FLYNN.

CLUTCH OPERATING MECHANISM.v

APPLICATION HLED JAN.15. 1914.

1,180,709. Patented Apr. 25,1916.

4 SHEETS-SHEET 3.

WITNESSES: I l/VI/E/VTOI? flimw WYUMHFW j Za u/wu g a W M. H. FL YNN.

CLUTCH OPERATING MECHANISM.

APPLICATION FILED JAN. 15, 1914. i r 7 1,180,709. Patented Apr. 25, 1916.

4 SHEETS-SHEET 4.

WITNESSES:

A TTOR/VE) 25 Incarrying out my invention STATES P TENT orrion.

MICHAEL H. ELYNN, OF HARTFORD, CONNECTICUT, ASSIGNOR T novanrvrnwnrrnn COMPANY, INC., orgnnw YORK-,N. Y., A'CORPORATION or NEW YORK.

' CLUTCH-OPERATING ZlYIECHANISM.

To all who'm it may concern Be 1t known that 1, MICHAEL H. .FLYNN," a

citizen of the United States, residing in Hartford, in the county of Hartford. and State of Connecticut, have invented certain new and useful Improvements in Clutchr Operating Mechanism, of. which the follow:

' ing is a specification. v e

This invention relates particularly to that class of machines in which articles operatedv P re placed by hand betweenmoving The object ofthis inventionis to provide means for so controlling the operation of 2c the machine that both hands of the operator are necessarily employed in setting the z s clutch mechanism so that the mechanism cannot be actuated unless both hands are oc cupied in starting the machine.

I provide two handrlevers which arenecessarily operatedby both hands of the attendant and must be'j moved in a certain sequence in order to set the clutch and eiiect the starting of v themachine. The arrangement is also such 5 that the machine will be stopped should either hand be withdrawn from a lever during the operation. In this way it .18 made practically impossible forthe operatonto place his hands between the moving working parts ofthe machine.

Inthe accompanying drawings .1 have illustrated several embodi lents' of my in- -a full revolution when the clutch is once 1- actuated. In others, shouldtheclutch be released by an upward'movement o'fthe trip rod at any part of the revolution ofthe vention.

power press showing my i provements in 'a 5 simple form applied thereto. Fig. 2 is a detail view of part of the mechanism shown. 7 inifllig. 1. Fig. 3 is a perspective view of part of a power press with amodified'form hi my improvements applied- F1gsx4 to 9 inclusive illustrate devices which maybe employed for connecting the two levers for operating upon theclutch operating mecha nism; these devices differing somewhat from the-mechanism shown'in-Figs. 1, 2 and 3,

A 'i and they are of such nature that should the lovers be operated in improper order the. machine will stop and cannot be; again started bythc operation of the levers until Figure llis a perspective 'iew of part of a Specification of LettersPatentL P t p 4 Application filed January 15,1914. Serial No. 812,256. I i I certain devices carriedthereby are properly, set. Fig. 4 IS a side elevationof parts of the two levers with certain devices-carried thereby, the levers and associated parts be ing in the position'which they occupy when the clutch is inoperative. Fig. 5v shows a cross section on the line 55 of Fig. 4 with the parts n the same position. Fig. dis a detail view similar to Fig. 4 but showing the position of the parts when the levers have been operated to'*'-set the clutch. Fig- 7,

shows a sectionon'the line 7+7 of Fig.6, Wlllh' the. parts in the position shown in Fig.--

6. Fig. 8 is a detail view showing the posig *tion of the parts should the levers be op erated in improper sequence. "Fig. -9- shows: a sectiononthe line 99 of'Fig. 8. Figs. 10 to '15 inclusive are views similar toFigs;

' 4 to 9 inclusive'but illustrate a modificsv tion. Fig. 10 shows aside elevation of parts of the two levers with devices associated therewith Fig. llshows'a cross sectionon the line 1111 of'Fig;10. Fig. 12 is a de-N tail view. in side elevation showing the position of the parts'when the levers havebeen 9 operated to set, the clutch. Fig. 13 shows a.

cross section'on the line 13-13 of Fig. 12.

Fig. 141s detail view showing the position of the parts shouldthe levers be operated in improper sequence. Fig. 15 shows a trans: .1

verse section on the line 15..15'of Fig. 14." Fig. 16 is a perspective view of amodified form of the invention. Fig. 1'4 shows a tietail of the mechanism' shown, in Fig. :16. Fig. 18 is a perspective view of a further 0 L modification; and Fig. 19 is a detail view of certain parts of this mechanism.

"In some presses the power shaft completes I shaft, the movement of the press plunger is instantly arrested. The diesof whatever I character are applied to the plunger in the. 0

usual way.

rod shown in Fig. 1 is connected to a lever G pivoted at c to the frame of the press.

For operating the clutch mechanism I em ploy two levers indicated in Fig. 1 by the letters I) and E and these levers"are connected with each other and at times move.

together in a manner hereinafter described.

firmly attached to the inner portion of the lever D. At its extreme inner end the lever E carries a lifting pawl 'G which is adapted.

to engage the under side of the lever C.

The other portion o of the lever E is disposed at right angles to the portion 0 of a this lever and extends through ,a guide slot- 0 in an extension (1 of-the guide plate 03 The opening in, theblock F through which the lever E extends is of sufiicient size to permit said lever to move to a small extent without binding.

Normally the levers D and E are depressed, their weight-being sufficient to returnthem to thisposition when free and at this time the clutch is inoperative. Whenjit is desired to set the clutch it is necessary to lift the'levers in proper sequence,-1f the lever D be first raised the clutch would not be operated because at this time the pawl G on the lever E is in the position shown by dotted lines in Fig. 2 and there is nothing on the lever 'D to engage the lever. 6'. Any movement alone of the, lever D upward or downwardnumber of times will not operate the clutch. But if when both levers are depressed, the lever be first raised then the part c of this lever will be turned around its longitudinal. axis and the pawl G will,

be turned in such manner that its nose will extend below the lever C, 'asdndicated' by full lines in Fig. 2. Then if the lever D be raised it will, of course, lift the block F'- and will also lift the inner portion of the lever E and therefore the lever C will have its outer end elevated and its inner end depressed so'as to operate upon the clutch. trip rod B and thus set the clutch. It is necessary during this operation for one hand of the operator to raise-the lever E to set. the

toe of the pawl G under the lever C and then when the other .hand of the operator lifts the lever E, the clutch mechanis'm'will he set and therefore it is impossible for the operator to place one or both of his hands between the punches or dies when the machine is in action. This safety apparatus is extremely simple but it is also very etlicient.

.Tn fast running presses lt'is practically press frame at 0.

impossible for the operator to put either hand under the moving plunger after the hands are removed from the levers, and

ordinarily with proper care the mechanism the proper actuation of the clutch mechanism when the levers are properly operated in the proper sequence and which render the mechanism inoperative and prevent the actuation of the clutch mechanism if the levers are'operated in improper sequence.

Figs 4 to 9 inclusive show one form of such mechanism and as this is a modification of the mechanism shown inFigs. 1 and 2 different. reference characters are employed. y

The clutch trip 'rod B is similar to that shown in Fig. i and it is connected with the lever Cf, also similar to the lever ,C, and this lever is pivotally connected with the The lever D is similar to the lever 1) before described and is pivotally connected to i This lever I)" carries, on its inner portion near the pivot c a block H which is rigidly secured to the lever D and has a lateral extension It through which extends the inner portion of the lever E similar to the lever the lever i and is provided with a hollow Iaterally'project-ing boss it which receives a pin 7L2 pressed outward by a sprin h housed in a recess in said block H. ormally the pin is pressed outward as indicated in Fig. 7.

The inner end of the lever E carries a head I which projects downwardly from it and is sec'ured'to it by the clamping devices Between the head I and the extension ie of' the block H is mounted a lifting pawl J which is pivoted on the lever E. This pawl is free to swing on its pivot and is adapted to engage the under side of the-lever C. but it cannot so engage unless its outer movement away from the lever C- is properly limited as it is weighted at 3' and if free it will swing so far away from the 'lever C" the press frame. at 0.'

presses are preferably hoth levegss have bee housing ar'l d allo w' th move. to lt-S' normal; 0

levers-are properly ra 1 fore descrlbed the sgd'e ,20

behind the pawl Kythle tie]Yumaliqtdfopel'aite the movement of the 1e ti'nn ofthe IS-Arts whq survi kl that the p21 Tm! "behind lug 7 adapted to; er lte] edge of the lifting the pmper I operation of he? I machine when the lever E, 'isfirst edshrid'th D depressed the lifti diSfi-utbed and th omratipri ma'yl st aise f cause th ingpawlwvill not then b gu'gjthelever (l' and this I raised and lowered iri'cfirht A complishiqg any result manner before 'des cued, then the pin" i1 qnenqej v th cluthgo g not befactuated. move the ,liftingjpa i E is first raised, thereby causing the rod 13 tobe gripped and then the lever D is depressed and the inner end of the lever E is thus also depressed causing the re B to be drawn downward, to. set the c utc 1. \Vhen either hand is removed from a lever.

the clutch is released. The lever D is raised when free by the spring N, and the lever E moves to its normal position by gravity and when it so moves itsgrip on the rod B is released.

In Figs. 16 and 17 I have shown another form of the invention. In this case I employ two levers D E which are mounted beneath the bed of the press A. The form of these levers is somewhat different from those heretofore described, but the operation is similar in that one of the levers must be moved before the other in order to properly operate the starting and stopping mechamsm'and the removal of either hand of the o erator from the levers will immediately allow the clutch to arrest the operation of the press. The lever D is pivotally con-- nected at its inner 'end to a bracket Oextending downwardly from the press andat its outer end this lever has an upwafrdly extending arm 03 provided with a handle J". This lever is normally held up against a j stop a? by a spring P and has on its upper edge in its rear portion a lug Q formed with an angular reentrant notch g. The lever E is formed with a handle 6 and it has a free pivotal connection with the bed of the press. This connection is formed'by means, of a set screw R having a large head-with a tapered inner side and which extends .through a wide opening into the lever and through a washer 9* having a tapered face this time the lever is clear of the notched lug Q, as indicated in Fig. lit), and when the mechanism is in this condit on the lever D may be moved without operating the clutch mechanism. :w W

In order to start the "press-equippeclwith the mechanism just described, itis necessary saidhotch when thelever D ator must be employed to first move the lever E until it engages the lug Q and then if the lever D' is depressed the lever E will be carried downward and operate the rod B The angle of the notch 51 is such that the lever E must beheld in is pressed hands of themperto effect the operadownward so that both which are clutch-operated, that they maybe applied tomachines ofother kinds. v p

tion. The release of either hand from the levers permits the trip rod to move upwhrd and release the clutch.

In Figs. 18 and 19 I have shown stillanf other f m of the invention. In this case I al 0 em loy two levels, but the inner end o t e' lever D is pivoted to a stud 1? audit "is held inits upper position by a spring t.

The lever E is attached at its inner end to a rock shaft which passes transversely through the frame of the press and one end of this rod extends into a recessed block F attached to the lever D. The shaft T has a vertical opening into or through which the lower end of the rod B extends. When the lever E is in its normal position the rod Bis not gripped, but when the lever E is elevated the rock shaft T is turned and the rod B is firmly held thereby. This mechanism is operated by first raising the lever E and then depressing the lever D. .The 1 rod B'cannot be operated unless the lever E is first raised. I have also shown the press equipped with devices for at times supporting the, tool-carrying part of the press plunger: This mechanism comprises a block U having a pivotal connection it at its lower end with a plate U on the bed of the press. The upper end of the block U is by a link a connected to an arm a secured to the rock shaft T. When the pressis at rest the upper end of the block U isl under the plunger and the latter will be prevented from descending should the'clutch he accidentally set for operation. The up x lever E removes ward movement of the the block from beneath the plunger W, as shown by dottedlines in Fig. 19, and thus the press can descend-when the rod B is properly operated. Eriih time that the lever E is raised the block U is withdrawn from under the plunger and each time that said lever is lowered the blockassumesa position beneath the plunger.

In the illustrations of my invention shown and hereinbefore described,

lie the trip rod B- i or't'he rod B and the lever C may be com f sid'ered the means for 'startingand sto associated parts are the means ior controlling the operation ofsaid means.

i s the machine, whilethe two leverswith t eirf As before stated my improvements are r especially adapted for use i I claim as my invention; 1. A safety devlic ma chines,- comprising andstopping erat'ed, levers one of means for starting e inc, two hand-op;

operative relation therewith, and which orpower-operated on ficwver, resses but it is;o vious t :is' adaptegl OPBIRSJIVGlY connect; witlir'said starting. an i stopping means, which is, normally out *of ran the operator, and means feol'inecting the two levers whereby after the firstlever is moved" byone hand to brin it into ol'perative1e12,? tion' with the starting-end stg' p pfing in'en-ns a movement of the ather lever by" the -other hand I of the operator will actnete the start? lng'lnechanlsm ping means themovementof'theotherilev r? er ated levers, a; devicewfcexriedj v 's'aidlevers adapted to; engage s aid st ting; 1

" which is normally; out which byfone hend'ofthe I t a n s, J QQ I F i g 1 1 r and stop ing the :1neehine ilted levels; a. lifting pzi'vvl l ,must be first brough operator, the

really out of :opertiti-ve [relation therewith and which must be first brought byone'of the hands of the; o rator into positioncto opemtivel'y engage theirewith mee o m tion between the t\vo 1eve1fs whereby when; one of said levers has been ,moved'jbyjone handi ot the operate to bring {it into op 1e steitingiand stop;

erati ve rela'tion -jvvit1v by the other: 113116 015 the;operaton will pnt the machine int'o" 0pe'1'ati'on..-

3. A Safety" devic machines, 1 comprising p and stopping the' in'aehinefltwo'h and stopping o m an operator into posi tio'nit engage seidfineens,

and a 'conneotion between It1 1e" ;t vo}1eyers whereby when, :ifteifonelof the'ileveis' has been moved by/one hand[of theoperatopf 'to bring ieinm gd emt' starting and stopping meens mat s second lever is move'd y: be ether hand offthe Start ,e

erated.

4:. A safety, (19? ans hasbeen moved starting and stopping machinetovbe stal'td I and stopping the; machine, two "hand-operated levers, a pawl ear riedby one of said levers and adapted to:;engage sald stzn ting.

and stop ing meansmvhichis noi'mall ylout.

of opera ive relationtherewith; and whioh nmsi? be first brought into positionyto engage s=iidt1eans by one'ofthe hands 'ottheioperatot and a connetion betweenthe two levers whereby aftei'thefirst lever 'iismovedby one hand to brnlg lt -1nto operative re-* hend leverQa,pawlgcarmedby one p p I I levers"end1vfladepted toi'lope'rate upon the 1 J 1 Kclntehtrip-rod, l nt-whieh. I of :iopjeretive relationtherewith}; and; means o conn'e cting thetwo efse' p w fi t e e is: m dbyte-1mm a m v men f I "of tne the1-1eve1 iby theotlmibend of the: r

opemtor'will eotnatethe 'starting' 1neans,

tripe-ed,

"P we ra e i means: fQT ar ngli mal osition i I if I the operated.

relation with the";

(meet {its no i m'al p "b m p r y p o h1g the two levees w ler'eby i after the. first power opei-ated; o

levelf is moved by, one Ihind a" movement of maghines; compr1sing 1neens 01 "ste'rtingand stopping the,*machine,"two hend-OP-f erated levers normallyi fout of 'operative ire I lation with said:-"sta1 ting andfjstoppi ng means, a connectiornvbetweengone ofj'said leveifsjnd the starting and stbpping'omeans, and 3 connection betvveenfthe twojlevrsf -.which after the levenleonnected}with they 50 k is"; moved by one hand" a; movement o will ause said liftin'gflpewl to engageseid itripirod lever and actuateithezmeehanisln: 1O. A safety deviee for poxvei' oypel-atedf" machines, comprising means for starting "and stopping the mechine a hand 'ievei ,'i}m pawlcnrri'ed therebyj normelly out ovf oper-g 5 t "ntiiv f 'relat i'inivith f starting andfstop v ping means, a lockin'gfixpawl 'forhol'ding the hand' fthe operator'theqstartingflend stgfik o p s normally an;

arrangement being also slich that, the? met v i r. hand 1%? is o 75 a e y d vise P machines; comptising eans; for f kind stop in theomaehinetwo h sedl it looking pawl" for ,1 in1it'1ng'1 the movement of said lifting,paw1, meaneco nec ing, the, twolevefs whereby affter onelfevebis movedfl o e "byfonehand,'aQinoveinentofthe'other v'er s byifthe;QthQfhiihCt ftheLopm a nate-j the starting means, and":

- v o o ime orff vi d ewi g the locking {m mi o' 1 83A safety device for two hand-open M Q i ej ng} seid lockingfpeyvlf ltlonfshonld th '1evers;--1;, d5 and means (3 the otthgerflever the other hand .of the the lever to which the trip :ifOd is connected; a locking pmvlj,-foiflimiting;themoveinentof the lifting pmvl, fond vmeans conneeting the twolevers whereby after? the first get/e1").

the

other lever by the other hen 'dof the operator] firstmentioned paiwlwinjits [normal Wi o ma' lq reheated ilnachlnes, compnsmgedn v'er ereim pe ly.

' machines,

. and stopping the machine,

another hand lever operatively connected 'with the first mentioned lever and which when the first mentioned lever has been moved to bring its pawl into operative relation with the starting and stopping means causes said pawl when said second lever is operated to engage and actuate the starting and stopping means, and means carried by said second lever for at times releasing the locking pawl and causin the first mentioned pawl to move out oi'normal position.

11. A safety device for power operated comprising means for starting a hand lever, a lifting pawl carried thereby, a locking pawl for normally holding the lifting pawl in its normal position, another hand lever operatively connected with the first mentloned hand lever to move it and cause itslifting pawl to engage and operate the starting and stopping means, and means carried by said second mentioned hand lever for withdrawa ing the locking pawl from engagement with the lifting pawl when the levers are improperly operated.

2. In an apparatus of the character described, in combination with means for controlling a power sup ly, a primary manually operated lever or actuating the controlling means, and a secondary manually operated lever for controlling the operation of said first mentioned lever, both said levers being arranged to require consecutive move ment into operative position before said operating means may-be actuated.

13. In an apparatus of the character described, in combination with means for conoperated lever for controlling the o eration' ofsaid first mentioned lever, both said levers being arranged to require consecutive movement into and out of operat1ve position in beginning and repeating the actuation of said power operating means. a

14. In an apparatusof the character described, in combination with means for controlling a power supply, a primary manually operated lever for actuating the controlling means, and a secondary manually operated lever for 'controlling'the operation of said first mentioned lever, said secondary lever being arranged to require restoration to normal position before the operation of said primary lever may be repeated.

15. In an apparatus of the character described, in combination with means for controlling a power supply, a primary manually operated lever for actuating the controlling means, and a secondary manually a primary manuoperated lever arranged to require alternate movement relatively to the primary lever for controlling thcpperation of said first mentioned lever, said primary lever being inoperative except when said secondary lever is in operative position.

In testimony whereof, I have hereunto subscribed my name. 

